Submersible propulsion unit

Details Submersible propulsion unit Submersible propulsion unit

Filed on

1994-11-18

Date issued

1996-11-26

Examiner

Swinehart, Edwin L.

Patent Class

Ships

SubClass

Submersible device

SubSubClass

Diver assistance device

Other Related Categories

114242, 440 88, 440 38, B63B 2156

Type

Patent

Status

active

Patent number

055774563

Description

ABSTRACT:
A small submersible propulsion unit for use in water sports such as snorkeling or skindiving. The propulsion unit includes an internal combustion engine and a propulsion device driven by the engine. Air is supplied to the engine for its combustion through an air box that is formed above the engine and which draws air through a snorkel device having a float operated valve for preventing the ingestion of water if the propulsion unit becomes submerged to a large extent. In addition, certain accessories for the engine are disposed in the air box and are accessible through an access opening in the air box for servicing.

REFERENCES:
patent: 3648643 (1972-03-01), Murray
patent: 3826220 (1974-07-01), Jacobson
patent: 3890920 (1975-06-01), Buelk
patent: 4160425 (1979-07-01), Curtis
patent: 4568293 (1986-02-01), Yazaki
patent: 4611551 (1986-09-01), Ferguson et al.
patent: 4635582 (1987-01-01), Nishida
patent: 5117817 (1992-06-01), Lin
patent: 5388543 (1995-02-01), Ditchfield

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